I want to switch from Chrome to Firefox but I have an issue with the Sync feature.
It always shows the following error: "Sync encoutered an error while syncing: Unknown error. Sync will automatically retry this action."

I already tried this workaround but it did not work: delete my Sync account, completely reset my Firefox profile, import my Chrome bookmarks (using an HTML file), setup a new Sync account (using the same address email then the previously deleted one).
But I still get the error message.

I've seen in other threads that it could be an issue with the history so I also tried to delete it but it did not work either.

Hi,
I want to switch from Chrome to Firefox but I have an issue with the Sync feature.
It always shows the following error: "Sync encoutered an error while syncing: Unknown error. Sync will automatically retry this action."
I already tried this workaround but it did not work: delete my Sync account, completely reset my Firefox profile, import my Chrome bookmarks (using an HTML file), setup a new Sync account (using the same address email then the previously deleted one).
But I still get the error message.
I've seen in other threads that it could be an issue with the history so I also tried to delete it but it did not work either.
Here is my last sync-log file: https://pastebin.mozilla.org/8219943
Thanks for your help.

Geändert am 14. Januar 2015 09:07:14 -0800 von gilgha

Ausgewählte Lösung

I've finally found a solution to that Sync issue:

I downloaded the "Places Maintenance" add-on and run the integrity check routine and it seems to have fixed the issue.

I've finally found a solution to that Sync issue:
I downloaded the "Places Maintenance" add-on and run the integrity check routine and it seems to have fixed the issue.
https://addons.mozilla.org/en-US/firefox/addon/places-maintenance/